TW200847458A - Solar cell module and wavelength converting type condensing film for solar cell module - Google Patents

Abstract

A solar cell module which can enhance the electric power generating efficiency by enhancing light utilizing ratio is provided. The formula n1 ≤ n2 ≤ n3 ≤ n4 is satisfied, when a sealing material 202 is set as a first layer, a wavelength converting type condensing film 300 is set as a second layer, an anti-reflection film is set as a third layer, an n-type layer is set as a fourth layer, and the refractive index of each layer is respectively set as a first refractive index n1, a second refractive index n2, a third refractive index n3 and a fourth refractive index n4. The wavelength converting type condensing film 300 make a surface from which an incident light irradiated be scraggy, and the refractive index of the wavelength converting type condensing film 300 ranges from 1.6 to 2.4. Also, the wavelength converting type condensing film 300 is transparent and includes a fluorescent material.

Description

200847458 '27222pif IX. Description of the Invention: [Technical Field] The present invention relates to a solar cell module and a solar cell wavelength-converting polycondensation, and more specifically, the present invention relates to a kind of Leading to the solar cell unit, converting the light in the wavelength domain that does not contribute to power generation into a domain battery cell that contributes to the power generation efficiency of the power generation domain, and the wavelength conversion type of the battery module Concentrating film. Taste [Prior Art] The prior group of the Shihuajing system is disclosed in the following non-patent literature. Refer to the picture! A rough view (cross-sectional view) to illustrate the previous sun = pool pull group. The Sunshine solar cell module is composed of a solar f cell unit 1 (10) ^ = 20 b sealing material (filler) 2 〇 2, a mark line (tab (6)) plus ' and a back film 204. (In the incident, the incident side is provided with a protective glass (also known as a cover glass ((7) glass)) 2CU. The use of stress-resistant reinforcement is used to protect the glass 2CU. In order to protect the _ 2〇1 seam The undercoat layer = the sealing material is excellent in adhesion, and the single-faced black is formed into a concave-convex shape by the one-in-one printing. Further, the concave-convex shape is formed on the electric t P and is formed on the lower surface of the protective glass in FIG. The surface of the sun pack core group 2〇la is relatively smooth. The seal material of the eight is usually based on the material of the B-acid lion, and the sealant 202 is also called the filler. The seal material is too early. 7C 100 is sealed. The solar cell unit 1〇〇 converts the incident light converted by the protection 6 200847458 • 27222pif, the glass 2= and the sealing material 2〇2 into the solar cell unit 100, for example, a tantalum (four) substrate or a single crystal stone. = X' is opposite to the above-mentioned incident side of the sealing material 2〇2 = the back film 204. ^ 'The following patent document 丨 discloses a solar electric power having the following configuration: that is, using an insect's target (m 〇th_eye, moth eye) structure, come to the outside of all angles of the direction of the tilt = j Reflection loss, efficiently = external light to guide people to a single solar cell. Follows

The structure of the worm's eye (respective h_eye) is a technique for reducing the reflection and efficiently introducing external light by forming a transparent shape such as a fine J, a cone, a double pyramid, or a quadrangular pyramid. , v = as described in Patent Documents 2 to 14, has been proposed many times in the solar power called the face-making method, the layer is the use of fluorescent substances (or Γΐΐ materials) to the sun green The ultraviolet ray region which contributes to power generation is subjected to wavelength conversion, whereby 'issuing power generation t' is controlled for the advancement direction of light emitted by the layer of the following long-term twilight layer for the proposals in the following Patent Documents 2 to 14. , to get the expected results. That is, the wavelength-converted light is emitted toward all of the _ portions of the one-layer structure (four) not only the introduction surface but also the face direction w of the layer perpendicular to the incident direction and the direction perpendicular to the incident direction, which does not contribute to Power generation. = 散 剌 剌 弘 弘 " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " " 489 pages (2003) Non-patent literature 3 · N.Kamata, IXTerunuma, R.Ishii, H.Satoh, S.Aihara, Y.Yaoita, S.Tonsyo,j QrganometaiHc Qierti·,685, 235,2003. ' ' Patent Document 1 Patent Document 2 Patent Document 3 Patent Document 4 Patent Publication No. 2005-101513, Japanese Patent Laid-Open Publication No. 2000-328053, Japanese Patent Laid-Open No. Hei 09-230396, No. JP-A-2003-243682 Patent Publication No. 5: Japanese Patent Laid-Open Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. 2, No. 2, 218, 379. Patent Document 6: Japanese Patent Laid-Open Publication No. Hei No. 2 (8) No. 24716 Patent Document 8 Patent Publication No. 8_〇〇4147 Patent Document 11 Patent Document 12 Patent Document 13 Patent Document 14 Patent Document 15 Patent Document 9: Japanese Patent Laid-Open No. 2001-094128 Patent Literature ίο 〇1_352〇91 Japanese Laid-Open Patent Publication No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. No. Hei. The first solar cell module has the following problems: Since the A-positive battery unit 100 has a large difference in refractive index from the interface, the first shot cannot be used effectively (incident light 205). . For example, the solar cell of the Shishijing system also has the following problems: Cannot use 8 200847458 27222pif Effectively use light with a wavelength shorter than 400 legs in sunlight, longer than rnn, 'about S6% of solar energy The spectnmi mismatch does not contribute to photoelectric conversion. SUMMARY OF THE INVENTION The present invention has been made in order to solve such problems, and aims to provide a solar-power h module capable of improving power generation efficiency and a wavelength conversion type concentrating light for a solar cell module. membrane. In addition, the object of the present invention is to provide a solar cell module capable of reducing the solar loss caused by the distribution, and to improve the wavelength of the solar cell module and the solar cell module used for the light utilization, in order to solve the above problem. The solar sun contains a plurality of members of the light transmissive layer, and according to the incident light, the solar cell module is set to be the first layer, the second layer, and the light transmissive layer. The m layer 'and each refractive index is set to the first refractive index ηι, the second refractive _ 曰 曰 - _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ 人 人 人 人 人 人 人 人 人 人 人 人 人 人 人 人 人 人 人Converting the two-light film, the wavelength conversion type (four)_refractive index is 16~24 The long conversion type concentrating film contains a fluorescent substance. And for the solar cell module, it is preferred that the wavelength is 400~1200, so that the following formula is used to illuminate 9 200847458 27222pif L number ij (1) L· where / is transmissive Rate, L is the average thickness of the film (_). 5 : 乂好, :, the above-mentioned wavelength conversion type concentrating film, in order to form the above-mentioned white name into H, then the ground is covered with a plurality of fine convex or concave shaped horn cones or cones. . Further, it is preferable that the light-incorporating substance in the wavelength-converting concentrating film absorbs light of 300 to 400 sin, emits light of 400 to the position, and can perform wavelength conversion. ^ That is, the above-mentioned wavelength conversion type concentrating film uses the above-mentioned fluorescent substance to absorb the light of f0·~the surface, and emits the light of the copper-blue leg. Ϊ m grain long-term concentrating concentrating on the wavelength of the position of the nm light guide ^ solar cell unit and the solar power ^ early 7L order photoelectric conversion. Therefore, spectral mismatch can be overcome. The wavelength-converting concentrating film having a micro (four) concavo-convex shape contains a bed material, and therefore, it is possible to form a ruthenium and an early film which are controlled by a condensing film in addition to the above-mentioned patent document. The money long conversion type concentrating m is transferred to step by step to improve the effect. In addition, the directivity of the incident light can be efficiently introduced into the solar cell unit by the directivity of the convex light. = The bright solar cell module can reduce the spectral mismatch [proper knower lost] and can control the advancement of light = light utilization efficiency, thereby improving power generation efficiency. In order to solve the above problem, the solar cell module of the present invention has a wavelength of 10 200847458 27222pif, and the layer has a plurality of sun rays, which are generated by the incident light to generate electricity. Upper: The wavelength conversion type concentrating film used, the incident side of the wavelength conversion type concentrating film for the f group, as the f condensing film of the plurality of light transmissive layers to ===, the incident light is made The entrance pupil is the incident side of the astigmatism light, and the plurality of light transmissions are

ί rate; 1 L1:: ...m layer ' and each of the refractions of each layer · ^ is the younger brother, the second refractive index ^... the refractive index of the first melon, , ^ ^ is established, the above wavelength conversion type concentrating film The refraction 卞...·~/ 'and the wavelength conversion type of nucleus contains a fluorescent substance. The 波长 又 ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ ’ [Number 2] (2)

L where 'T is the transmittance and L is the average film thickness (_). Further, it is preferable that the wavelength conversion type concentrating film is formed so as to be spread over a plurality of fine convex or concave polygonal pyramids or cones without any gap on the incident side of the incident light. Further, it is preferable that the luminescent material contained in the upper-length conversion type concentrating film absorbs light of 300 to 400 Å, emits light of 4 (8) to swollen surface, and can perform wavelength conversion. That is, the wavelength conversion type concentrating film absorbs light of, for example, 300 to 400 rnn using the above-mentioned fluorescent material, and emits light of a length of ~12 〇〇. Borrowing 200847458 27222pif it, wavelength conversion is performed in the above-mentioned wavelength conversion type concentrating film, and light of one to let nm is introduced into the solar cell unit to make solar power = 兀 兀 仃 photoelectric conversion. Therefore, spectral mismatch can be overcome. In the solar cell module of the present invention, a wavelength conversion film having a relationship between an ith refractive index n], a second refractive index η, and a second refractive index of the plurality of light transmissive layers is satisfied. The layer of the new layer can be marked as the Uth, the first and the second layer from the side of the human beam, and at least the light-transmitting layers! The layer has a concave-convex shape on both sides, and the refractive index of the above-mentioned wavelength conversion type concentrating film is reduced to a light substance, so that the solar cell can be improved:: The fluorescent substance is sucked ======= The film utilizes nm Light, therefore, can defend the hair out of 400~; 12 〇〇 service spectrum mismatch. That is, the wave f is converted by ; Therefore, the condensable film can contain a glory material, and the battery module can be controlled by wavelength conversion to control the refractive index. The concentrating film can be used for wavelength conversion to convert wavelength conversion. The effect of the light is controlled by the fine concave and convex shape. Further, 'the light can be efficiently introduced into the solar cell unit', and the incident light is emitted. The following table shows the best form of Figure 4. Fig. 2A: FIG. 2 shows a section of a solar cell module in which the solar cell 12 200847458 27222pif unit is used as a material for the invention. The solar cell module is a solar cell module that is generated by Jiang Zhong, and is introduced into a plurality of light transmissive layers such as a light-transmissive glass 20j, a light incident from the incident light 205, and the like to the solar cell unit (10). ; 202, a wavelength-converting concentrating film layer, and a specific - exemplified light layer is a protective glass 201 that represents the light-transmitting side of the front side of the structure: Jin He = can also be in the light, ..., In addition to the almost helmet μ film in the battery module, it is not in the present invention. The anti-reflection on the glass is an anti-reflection film on the glass. The mask is a film-transfer type H concentrating film which is placed on the person's side of the human light. The wavelength-converting concentrating film 〇: · 2·4' contains a fluorescent substance and is transparent. In the concave portion of the wavelength conversion, the surface is formed by concealing a plurality of fine patterns without a gap, and the respective concave portions or convex portions have a conical shape or a polygonal pyramid shape having substantially the same shape. For example, as a shape and method of the wavelength conversion type concentrating film used in the present invention, a vacuum metal laminator is used to impart a semi-hardened state, a photocurability or a thermal property to the cell. The use of an organic-inorganic hybrid material having a titanium tetra-alkoxide and a fluorescent substance can be used to achieve a high refractive index and a wavelength conversion function. Further, since the film has photocurability or thermosetting property, the film is formed into a film shape by a casting method or the like on a base film such as polyethylene terephthalate (Cpolyethylene terephthalate, PET). The above film was covered with a separator film of polypropylene (PP), etc., 13 200847458 27222pif. The photo film 300 of the solar cell unit 100. The solar cell unit 1A is formed by attaching a wavelength conversion type anti-reflection film 1G4, a surface electrode, a back substrate, an n-type layer, and a solar cell unit to a second electrode and a ruthenium layer. In the conversion type of filament and domain conversion silk domain. Wavelength touch. In addition to the battery early 1 (8), the anti-reflection film 104 is connected to the η solar cell unit UK) using a polycrystalline stone substrate or a single earth plate (10) crystal (4) solar cell unit, for example, a p-type stone having a thickness of um夕 substrate. In the scraping stone, , , , and 11 type layer.表 夕 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 基板 均匀 均匀 均匀 均匀 均匀 均匀 均匀

= Set, unnecessary reflection, the refractive index composed of ^ 11 N and chlorine H of the anti-reflection film I is a range of h8 to 2.7. The financial system of the job film is %~

Titanium oxide can be used as anti-anti-_1G4. The T 2 long thief concentrating film is formed by the singularity of the singularity: as described above, the intt — face ” is a polygonal or conical shape of a convex or concave shape that is regularly covered on the single-sided side. The above polygonal pyramid has the same shape. Moreover, the above-mentioned cones have substantially the same shape. The upper second surface side 300a is formed on the light incident side (one of the incident light 2〇5 incident), and the opposite side 3_ on the light incident side is in contact with the anti-reverse 2 m of the solar cell unit 1A. Further, as described above, the other surface may be fitted to the unevenness of the surface of the solar cell unit 1 without any gap. 14 200847458 27222pif Further, the refractive index of the wavelength conversion type concentrating film 300 is as follows. In order to reduce the reflection loss of external light (incident light 2〇5) incident from all angles and to efficiently introduce the external light into the solar cell unit, the refractive index of the wavelength conversion type concentrating film 300 must be higher than that of the sealing material. The refractive index of 2〇2 must be lower than the refractive index of the anti-reflection film 104 on the solar cell unit 1〇〇, and the refractive index of the wavelength conversion type light-concentrating film 3〇〇 is set to 16 6 to 2·2, It is preferably set to L6~2. ϋ...· η North side of the 矽-type 矽 substrate opposite to the incident side (surface side): J forms an aluminum paste for the back surface (“surface noise”), and then the back surface electrode 1〇8 is formed on the back surface of the aluminum water. Further, on the back side, the back side (4) of the aluminum f in the aluminum paste reacts to form a P+ layer, thereby forming a back surface field (BSF) layer 109 which improves the power generation force. That is, in order to efficiently introduce incident light from all angles into the solar cell: 兀, ', the apex angle of the wavelength conversion type concentrating film 3 狭窄 is narrow. ^ When the reflection loss is present on the two sides of the wavelength conversion type concentrating film 3 〇〇 and the solar cell, if the apex angle is too narrow, reflection is caused to the outside. In order to reflect the reflected light again by the wavelength conversion type concentrating film and smoothly return to the solar cell unit, the apex angle is 90 degrees. If the apex angle is 9 degrees, considering the performance and accuracy, it can be said that 90 degrees is the best angle. Root = Patent Document 2' The size of the bottom side is the value obtained by using the shortest wave = the refractive index of the material of the bottom & as an example, the refractive index is set to 2. 〇, y, too dangerous In the Baochiyu group, the above value is about 175 nm. However, in order to obtain such a fine structure, the processing method is also subject to 15 Ο c 200847458 27222pif However, the present invention does not require such a super-skin wavelength conversion type concentrating film 3. . The structure _ two wavelength conversion type concentrating film _, as shown in Figure ^1 = pedestal portion 302 must be viewed with the solar electric concave and convex portion. A texture 使用 is used on the surface of the battery unit 〇0, and the depth of the texture structure is 〇~20 _. Further, the original fine concavo-convex shape of the wavelength conversion type concentrating film 3 (10) is required, and therefore, a a pro-amine composition. As the wavelength base: two-shot oxygen-containing wavelength conversion type poly film 3. . Second, there is work = long conversion (10), that is, the wavelength conversion type concentrating film 3 (8) is a semi-solvent dry jin it _ is applied to the solar cell unit, and after the whole i ==: single = change concentrating _ can End 16 200847458 27222pif If the wavelength conversion type concentrating film 300 is originally film-shaped, and step-by-step vacuum lamination of the model film (moving i Zhao m) having the wavelength conversion type concentrating film original _=2 peeling The torsion shape is a polygonal shape or a concave shaped polygonal cone or cone by the model county shape. First, fine 〇 =, a pattern film formed by patterning a plurality of fine recesses or protrusions without a gap is placed on the concentrating film 300, and a 4 ° scoop is superposed to form a shape transfer. Thereafter, the release film 2 was irradiated with = WLTltmviolet 'UV) to harden the light-concentrating film 3 (8). ^2, the model film can be laminated on the concentrating film without removing the model film, and the surface is used to form a fine recess in the manner of concentrating the concentrating film R Π ^ Or the mouth P. Fig. 4 is a view showing a state in which the model film 3〇1 is placed on the mountain of ^300. The model film 301* is fused at a wavelength; at the fine concave portion of the light or at the side of the convex portion 3〇〇a, the number of the fine concave portions or the convex portions is complementary without any gaps. a film of a portion or a recess' and the mold film is a mold of a concave portion or a convex portion of the light-concentrating film 300. The wavelength-changing film 2::==3°1 is placed in a wavelength-converting type concentrating light to make the wavelength (4) The structure of the light-concentrating film 3GG is cured. In addition to the mold film 3G1, the sealing material 202 is laminated with the unevenness of the wavelength-converting light-concentrating film. The heat and the heat are 27 200847458 27222pif wavelength-converting film Transfer film 'This layer is deposited on the wavelength conversion type concentrating film · 疋 该 该 该 模型 • 附 附 附 附 附 附 附 附 附 附 附 附 附 附 附 ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® ® The above wavelength conversion formula; 301 is: ί上崎, here at the model film, the gap is fine, the fine concave portion of the light 300 or the convex side 3〇〇a gap is completed with the above-mentioned fine concave portion or The convex portions are complementary (there is no _3〇1 secret: a film of a fine convex portion or a concave portion of the sinus, and the solar cell μθ paint material is used as the wavelength conversion type concentrating film 300, The prefecture carries out::_f green lacquer material', after the solvent is dried, it is modeled, also; 2: At this time, the model film can be peeled off and hardened under the condition of hard film 1: adhesion of the model film. The curing method of the material may be set in advance for the resin. Alternatively, the resin composition may be thermosetting in advance, and the solar cell 18 of the solar cell unit 100 as shown in FIG. 2 may be used. 200847458 27222pif module For example, when the sealing material 202 is the first layer (the protective glass and the % sealing material 202 # are substantially opposite in refractive index, it is considered that the protection of the glass is the same as that of the dense material 202), and the wavelength is converted. The concentrating film is also the second layer, the 反射 several reflection film 1 〇 4 is the third layer, the 〇 层 layer 3 is the fourth layer, and the refractive index of each layer is set to the first layer. When the refractive index \, the second refractive index η2, the value of the refractive index η2, and the refractive index of the 帛4 are ,4, Ο is established. The wavelength of the long-ray light film 3(8) which is the second layer of the one of the light-transmitting layers is As described above, the human light 曰 2 〇 5 : shot: 3 〇 () a is a concave-convex shape. In detail, wavelength conversion type concentrating The refractive index η3 of the wavelength conversion type concentrating film 300 is set to 1.6 to 2 4 as described above by using a plurality of fine convex or concave polygonal pyramids or cones as described above. When the wavelength is 40 〇 to 1200 nm, the value of the normalized absorbance a shown by the formula (3) of the wave = optical film is 0·1 or less. [3] [1 / (10)], "°") (8)

JL where T is the transmittance and L is the average thickness of the film (^ work). Now, the manufacture of the solar cell module shown in Fig. 2 is carried out. Ideally, the 'desired refractive index is connected to the second θ: the shallower position is the smaller of the numbers of the first 2.1 m marked from the incident side). However, in the step of forming the unit cell of the solar cell unit, the anti-reaction 1Q4 as the third layer and the n-type 19 in the fourth layer of the above-mentioned fourth layer are in the process of /3⁄4 y The above-mentioned 3rd layer and the above-mentioned 3rd layer, eat ^ ===) sealing material transfer and wavelength conversion. The connection of the layers of the various layers, the refractive index of i, the rate = the prior art, it is difficult to obtain the formed wavelength Conversion type concentrating film: In the module step, 〇^:;;r rate is less than or equal to n3. If the module step =: fold, two ======: the shape 'the size of the invention may be two = 10 // m or more. The reason for the recognition is that the rate distribution of the v. v 兄 兄 , , , 利用 利用 利用 利用 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何 几何The optical interface on the layer structure corresponds to the reflection of the interface between the mold seal and the unit, and the prior art: ^. . _ The amount of introduction is ^ for a structure, which can make the wavelength turn 20 200847458 27222pif Ming · borrowed =:: = ν to make the wave surface = Ο ί , / The light film is characterized by · · According to the wavelength Conversion type poly, 敕, 〗 〖 ~ battery single 100 anti-reflection film 104 of the two, to 5 worm glass 201, the tempered glass 2 〇 1 lower layer of sealing material 2 〇 2, 2 wei layer inside the Wei unit The refractive index of the ρ layer or the like. However, it can be 202 Λ, reinforced glass 璃 2 〇 1, the tempered glass 2 〇 1 lower layer of sealing material battery, the internal η layer, the middle layer of the Ρ layer is wavelength conversion =, 'film 3GG and anti-reflection film just To adjust the refractive index, it is easy to only present the above ni$n2$n3gn4. The simplest consideration is as described. Here, since the refractive index of the cover glass 202 is also substantially the same, it is considered that the protective glass 201 has the same optical property (refractive index 〜) as the sealing material 2〇2. Further, the refractive index of the 吏 wavelength conversion type concentrating film 3 为 is n2, and the antireflection film 1 〇 4 and the radiance is 113 Å, so that the refractive index of the n-type layer is time-dependent, and it is preferable to return Ni, n2, n3, and n4 satisfy the following formula. When Άλ is substituted into a rough specific value, η2~1·97 and η3^2.59 are calculated from η and 1.5, η4 and 3.4. Further, in order to perform wavelength conversion, it is necessary to make the wavelength conversion type light-concentrating film 300 21 200847458. Further, the light-emitting material will be described. Yangdian binary replacement, light film, 3. . Attached to the solar cell is attached to the solar cell unit. The high-order image containing the luminescent material is not wavelength-converted. The semi-hardened dichroic film 300 is used. Refractive grease composition 305 as a wavelength transition t. 3 〇Ϊ / /:: sad and contains - high refractive index resin with a fluorescent material composed of titanium-based organic-inorganic hybrid material to stabilize == light IS This is a resin composition 305 which is in a semi-hardened state and which is in a semi-hardened state and which is sandwiched between pET film::: film (isolation 臈) 306. The specific manufacturing process covers the high refractive index resin composition ^5 using pp or the like of the separator 3 〇 6 radiance; tf6 (b) 7F 'when the above-mentioned high-folding containing the county material is brought into contact with the solar cell unit At the time of lamination, after the separator 306 is placed, the above-mentioned high refractive index resin machine is placed in the solar cell unit i. . On, and using vacuum lamination, the vacuum laminating machine is used for shape transfer. twenty two

200847458f A I Next, the mold film 301 is peeled off, and the high refractive index resin composition 3〇5 containing the above-mentioned fluorescent substance is hardened by UV irradiation. Thus, when the transfer of the shape is completed, the high-refractive-index resin composition 305 in a semi-hardened state is hardened by light or heat. The model film 3〇1 may remain on the wavelength conversion type light-concentrating film 300, and the solar cell unit 1〇〇 and the wavelength conversion type light-concentrating film 300 may be sandwiched between the protective glass 2〇1 and the sealing material 2〇2. The back film is 2〇4 and modularized. Fig. 6(e) shows the state after peeling off the model film 301 from the state of Fig. 6(d). After the mold film 301 is peeled off, the solar cell unit 100 and the wavelength conversion type light-concentrating film 300 may be sandwiched between the cover glass 201, the sealing material 202, and the back film 204 to be modularized. At this time, if the depth of the texture structure of the unit is 10 Am and the depth of the concave and convex of the model film is 10, the thickness of the light-concentrating film before the lamination (high-refractive-index film in a semi-hardened state) must be at least 20 // m. According to the foregoing statement, the pedestal portion 302 of the wavelength conversion type concentrating film 300 must be 10 // m, and the uneven portion 303 must be 10 // m. In the present invention, it is not necessary to form the texture structure actively, but in the slice processing for the Silicon Ingot, many surfaces are accompanied by irregularities, and therefore, the pedestal portion 302 must correspond to the above-described unevenness. Next, an organic-inorganic hybrid material such as a high refractive index resin composition 305 which is used in a semi-hardened state of the wavelength conversion type light-concentrating film 300 will be described. In the present invention, in order to obtain a high refractive index, a Sol-Gel method is used to form an organic-inorganic hybrid material. Sol-gel 23 200847458 The necessary component in the 27222 pif method is an alkoxy metal represented by (R))nM-(〇R2)m, and the present invention can be represented by Ti((R)4) Titanium alkoxide is used as at least a part. Accordingly, Μ may be selected from the group consisting of Zn, Zr, a, Si, Sb, Be, Cd, Cr, Sn, Ο

Metals of Ga, Mn, Fe, M〇, V, W, and Ce. For R: a plurality of feet having a carbon number of 1 to 10] and R2 and M are bonded, but each of them may be completely the same or different. n is an integer above 〇, m is an integer greater than i, and n + m is equal to the valence of [y]. When the organic/inorganic hybrid material is obtained by the sol-gel method, the amount of the alkoxy group to be used may be either one type or plural types.蜀 In order to obtain an organic-inorganic hybrid material by a sol-gel method, a metal alkoxide, water, and an acid catalyst are added to a resin composition in a solution form, and applied to a substrate to form a solvent. The above organic money mixed material can be obtained by evaporation, and by or by this. However, depending on the reactivity of the alkoxylated metal selected, the tree does not require water and/or acid (or test) catalyst. Moreover, the heating temperature also depends on the reactivity of the alkoxy metal. For a metal having high reactivity such as Ti, no catalyst is required, and the heating temperature may be a temperature of about 100 °C. This kind of day, not - must be f (. 〇 _) three,,,, · mouth structure:, you can only present the refractive index. In particular, the three-dimensional impurity of the oxidized crystal is a semiconductor structure and can be used as light (four). Money, the structure is not good in terms of photodegradation, because J: Bu, Yan ^ Α θ rt ^ mouth, in order to not damage the above three-dimensional structure, effective bismuth and other alkoxy metal combined method. In the case of the convex portion forming the light-concentrating film, the model film of the mold of the model film can be produced by the method disclosed in Japanese Patent Laid-Open No. Hei. The material f of the money and soil can be (4) the organometallic complex of the rare earth element or the rare earth element == When the substance is the ion of the above rare earth element, it can be introduced as: t ΐ 1匕 agent To inorganic host crystals (host c (four) 1)

The material::, the fluorescent substance f is an organic metal mismatch of the above rare earth element, and the organic metal complex is directly dispersed in the high refractive resin composition. The rare earth bismuth has Ce (钸), Pr (镨), Nd (鈥), pm (giant), (钐), Eu (铕), Gd (釓), Tb (4), Dy (镝), Ho (Kin ) 'Er (oblique), Tm (铥), Yb (镱), etc. Further, the fluorescent substance in the present invention may also activate the crystal matrix (Kiss (6) gland) in a light source called a batch of 2 ions, or the fluorescent substance in the present invention may also be used. It is a gold oxide or an organic metal complex of these substances. These materials are Qi (copper), Zn (zinc), Ga (gallium), Ge (germanium), As (arsenic), Ag (silver), Cd (cadmium), in (indium),

Sn (tin), Sb (锑), Au (gold), Hg (picking), τΐ (snake), Pb (wrong),

Bi (铋) and so on. Further, the fluorescent substance in the present invention may be a substance which activates the crystal matrix by using an element called a transition metal from t as a luminescent center. Alternatively, the fluorescent substance of the present invention may be a metal oxide or an organic metal complex of the substances. These materials are Cr (chromium), Fe (iron), Mn (manganese) 25 200847458 27222pif and the like. Further, an organic fluorescent substance can also be used as the fluorescent substance in the present invention. Examples of such fluorescent substances include fluoranthene, perylene, acridine ("knot leg anal", rhodamine 6G, rhodamine b, brim her ulf〇flavine FF, basic yellow (basicydl〇w) HG, eosin (e〇sin) and the like. In the present invention, the fluorescent substances are not limited, and

^ And Ting chooses twilight matter. For example, for the solar cell of the above-mentioned Shi Xijing system, since the light having a wavelength shorter than 400 mn and the light having a wavelength longer than 120 nm cannot be effectively utilized, it is preferable to absorb the wavelength rut 400. Nm short light, emitting 4 (8) ~ light. An example of the above-mentioned fluorescent substance can be used as Eu(TTA)3phen or the like listed in Non-Patent Document 3. For example, regarding the amorphous quartz solar cell, the GaAs solar cell, the CIS solar cell, the PbS photoelectric conversion device, the cds photoelectric conversion device, or the like, the fluorescent substance may be selected based on the sensitivity spectrum of the device. Referring to the accompanying drawings, the following embodiments describe the embodiments.

According to the third embodiment, the wavelength conversion type condensing is attached to the solar cell unit by the method described so far. The unit f=2 is a schematic view when the wavelength conversion type concentrating film 300 is attached to the solar cell & and 'loaded into the module, and it means that the 桓 瞪 301 does not remain in the room, and sleeps, The situation inside the Yang turtle pool module. Here, in FIG. 2, 26 200847458 27222pif is omitted, and FIG. 5 is a configuration in which the wavelength of the model film 301 is converted into a graph money model film 3G1. In Fig. 5, the battery module is also omitted (the simple description of the drawing) is connected to the I § line.

A cross-sectional view of the solar cell module before the Ο-II. The solar cell module t of the best form of the 2 3 θ is shown in Fig. 3疋 to illustrate the wavelength conversion type: and the U surface view. Fig. 4 shows the model. The film is cut by Y=°:f. Fig. 5 is a cross-sectional view of the state on the first skin. The figure 5 shows the structure of the solar cell module with the model element attached to the solar cell. 0, Fig. 6(b), Fig.;;: face view. It means that the concentrating film is attached to the sun. Figure 6 (d), Fig. 6 (e) [Description of main component symbols] Pen's unit processing sequence 100: solar cell unit 101: p-type germanium substrate 102: texture structure 103: n-type layer 104: anti-reflection layer 108: back electrode 109: BSF layer 201: protective glass 27 200847458 27222pif 201a: surface 201b: single-sided 202 : sealing material 203 : marking line * 204 : back film • 205 · · incident light 300 : wavelength conversion type concentrating film ζ \ 300a : single side 300b : opposite side 301 : model film 302 : wavelength conversion type concentrating film The pedestal portion 303: the concave-convex portion 304 of the wavelength conversion type concentrating film: PET film 305: high refractive index resin composition layer 306: PP film 28

Claims (1)

200847458 27222pif X. Patent application scope: A solar cell module having the above-mentioned solar cell module including a plurality of light transmissive layers, which is formed by laminating members and generating electricity according to incident light, is: i Γ ΐt 射 射 ΐ ΐ , , , , , , , , 射 射 射 射 射 射 射 射 射 射 射 射 射 射 射 射 射 射 射 射 射 射 1 refractive index η], second refractive index 叱, ... mth refractive index &卞; 仏 is established, and at least the incident side of the light-transmitting layer has a concave-convex shape Concentrating film,] Long-conversion poly-compound has a refractive index of 16 to 24 and contains a fluorescent substance. "2. The solar cell module according to the above-mentioned patent scope, wherein when the wavelength of the incident light is 4 〇〇 to 12 〇〇 nm, the length of the expression represented by the following formula (4) is The standardized absorbance of the conversion type concentrating film has a value of 0·1 or less, 夂 [number 1] • X/ where D is the transmittance and L is the average film thickness (//m). The solar cell module according to claim 1, wherein the wavelength conversion type concentrating film is configured to cover a plurality of fine convex shapes or concaves without gaps on the human light side of the human light. Formed in the form of a polygonal pyramid or cone. I, 4· If you apply for a patent scope! The solar cell module according to Item 2, wherein the fluorescent material contained in the wavelength-converted light source of the towel can be wavelength-converted and absorb light of 3 〇〇 4 〇〇 nm. , issued 29 200847458 27222pif out of 400 ~ 1200 nm light. 5.-A wavelength conversion for a solar cell module = a laminated layer including a plurality of light transmissive layers: • The characteristics of the wavelength conversion type concentrating film for the panel group Ο: the incident side, as the above The light-transmissive layer and the wavelength-converting concentrating film used for the gradation layer have an uneven shape on the incident side of the incident light, and the plurality of permeable layers are set from the incident side The first layer, the first = first layer = the layer, the emissivity of each layer of the wire (four), ..., the mth refractive index nm, the refractive index of the wavelength conversion type concentrating film. J 外耵卞冯 I.6~2·4, and contains the fluorescent material 6 bucket as described in the fifth paragraph of the patent application scope = polyfine, its heart canister ^ 4 = use 2 2 by sucking on the fun [2] (5) where T is the transmittance and L is the average thickness of the film. 7. The concentrating film of the type described in the fifth paragraph of the patent application, wherein the above wavelength conversion type poly = = The side is formed by covering a plurality of fine pyramids or cones without any gaps. The wavelength conversion type concentrating film for a solar cell module according to the fifth aspect, the sixth aspect or the seventh aspect, wherein the wavelength conversion type concentrating film is included in the above-mentioned wavelength conversion type concentrating film Fluorescent materials can be wavelength converted and absorb light from 300 to 400 nm to emit light from 400 to 1200 nm. 31